Liquid-dispensing apparatus.



W. HELMER.

LIQUID DISPENSNG APPARATUS.

APPLICATION FILED MAY 14, 1909.

Patented May 2A, w10.

2 SHEETS-SEBET 1,

W. HBLMER.

LIQUID DISPBNSING APPARATUS.

APPLICATION FILED MAY 14, 1909.

Patented May 24, 1910.

2 SHEETS-SHEET Z.

/N VENTO/e.

WILLIAM HELMER, F BOSTON, MASSACHUSETTS.

I LIQUD-DISPENSING- APPARATUS.

Specication of Letters Patent.

Application filed May 14, 1909.

Patented May 24, 1ero. Serial No. 496,019.

To all whom 'it may concern:

Be it known that I, WILLIAM HELMER, a

citizen of the United States, residing in Boston, county of Suffolk, and State of Massachusetts, have invented an Improvement in Liquid-Dispensing Apparatus, of which the following descri tion, in connection with the accompanying rawings, is a specification, like characters on the drawings representing like parts.

This invention relates to an apparatus for dispensing liquids under different pressures through a common outlet, and is especially designed and adapted among other uses to be employed for dispensing .soda and like beverages, composed of two different liquids,

one under atmospheric pressure and the other under a higher pressure.

The present invention has forits object to provide a simple andsubstantially inexpensive apparatus, with which two different kinds of liquids may be drawn into a tumbler or like receptacle through the same nozzle or faucet with the least possible labor and at a minimum expense. This result may be accomplished as herein shown by means of a pump having a 4discharge' nozzle at its upper end and constructed at its lower end to force a predetermined quantity of liquid under atmospheric pressure from a receptacle or well through the discharge nozzle into a glass tumbler or-other receptacle, by movement ofthe pump a given distance in one direction and on further connection between the two vessels cont-ain ing the different liquids. Fig. 3, a detail in plan and sectionvof the connect-ions shown 1n Fig. 2. Fig. Li, a section on the line 4 4, Fig. 1. Fig. 5, a detail in plan-to be referred to. Fig. 6, a section on the line 6-6, Fig. 1. Fig. 7, a section on therline 7-7, Fig. 1, and Fig. 8, an enlarged sectional detail to be referred to. Fig. 9, a detail of the pump piston andl rod, and Fig. 10, a section 0n the line 10-10, Fig. 9.

Referring to the drawings a represents a portion of a soda fountain of any usual or suitable construction; I) a syrup can or tank, and c the outlet pipe from a tank of water charged with carbonio oxid and not shown, as it may be such as now commonly employed.

The syrup can b is provided at its bottom with a depression o r cavity d, forming a cup or well into which is extended the lower end of a pump having its upper end extended up through the top e of the casing f inclosing thecan b, said pump being provided with a discharge nozzle or faucet g. 4The pump may be of any suitable construction which is capable of being depressed at its upper end so as to force a predetermined quant-ity of the syrup through the `nozzle g at each depression or down-stroke of the pump, and in the present' instance I have shown one construction, which may be preferred by me. The pump herein shown 'consists of a head 10 having an opening 12 in -its bottom with which communicates the nozzle g, preferably inclined upwardly from the head and provided at its outer end with a cross piece or dam 14 for a purpose as will be described. The head 10 has extended from its bottom a-nipple or flange 1G, which is externally and internally screw-threaded. The external screw-threads on the nipple 16 are engaged by an internally threaded sleeve 17 and `the internal screw-threads are enn gaged by an exteriorly threaded pipe 18. The sleeve 17 extends through a collar 19 having an inturned flange 20, which overlaps an outwardly extended flange 21 on the sleeve 17 and forms a stop to limit the upward movement of the sleeve 17-and the attached head 10. The head 10 is provided with a bead or shoulder 121, which coperates with the flange 20 to limit the downward stroke of the pump. The collar 19 rests on a sleeve 22, which is provided with an outwardly extended flange yor lip 23, which overlaps and is supported by the casing es The collar 19 is provided with an extension 24 provided with external screwthreads, which are engaged by internal screw-threads on the sleeve 22. The sleeve 22 is provided with a bottom'wall 25 having a central opening through which the pipe 18 is extended. The bottom Wall 25 has a depending flange 26, which is internally threaded and engaged by an externally threaded pipe 27 surrounding the pipe 18. The bottom wall 25 of the sleeve 22 supports a helical spring 29, which in turn 'supports the head 10 and its attached parts.

The pipe 18 is externally screwfthreaded at its lower end'and is engaged by a threaded collar 30 and also by a tube 31 forming part of the pump casing, it being connected by arms 32 to an annular ring33, which is in threaded engagement with the cylindrical body portion 34 of said casing, the latter being closed at its lower end by the bottom wall 35. The tube 31 is rovided on its interior 'with longitudinally extended keyways or slots 36 (see Fig. 4) into which project lugs or keys 37 on the exterior of a sleeve 38 located in the said tube. The sleeve 38 is in threaded engagement with the lower Aend of the ipe 18 and moves with the latter and said sleeve is provided near-its [lower end with an inwardly extended flange 40 forminga valve seat with which .coperates a valve 41 having its stem 42 extended through a central opening 43 in a'diaphragm or plunger 44 (see Fig. 5), which may be of wood, metal, `or other desired material and which is provided with one or more ports or openings 45 through it. The valve stem 42 is provlded with a removable screw 46.at

its lower end whose head is designed to engage the lower surface of the plunger 44 and act as a stop to limit the upward movement of the valve,

It will be understood-thatthe tank or can b is lled or substantially filled with syrup or other liquid, and that the Fcylinder 34 of the pump is also filled with the liquid. When it is desired to draw a charge of rup, the-operator depresses the headof s tlie pump, which action forces the plunger 44 down in its cylinder, thereby forcing the contents of the said cylinder up into the pipe 18, the liquid flowing throu h the openings 45 and through the port in t e valve seat orv v flange 40, the valve 41 being lifted bythe upwardly moving liquid. The pipe 18 1s filled with syrup by one or more strokes of the pump and when 4filled, 'the 'next stroke of the pump causes a given uantity of the syrup substantially equal to t e holding casure of the hand is removed from the pacity of the cylinder 34 to be discharged through the nozzle g and into atumbler or other suitable receptacle: When the rs e ofthe pump, the said head and theparts attached to it are restored to their normal or starting position by the spring 29. l

Provlsion is made for discharging through the nozzle g, a charge of liquid under pressure, such as charged water, and, for this purpose, the head 1 0 is connected with the outlet pipe c for the charged water van internal annular fiange 54 orming a port or opening 55 and a valve seat 5 6, with which coperates a valve 57 loosely mounted on its stem, which is shown as made in two parts 58, 59, the part 58 being shown as a screw which has its shank reduced in section for a portion of its length, which is extended through the valve57, and has its threaded end extended into a threaded'socket in the end of the other art 59, which is shown as a rod extended t rough the head 60 of the valve casing and provided with a slot 461 for the passage of a finger 62 attached to the head 10 ofthe pump. The part 59 within the valve casing is provided with a ange 65 against which abut's one. end of a helical spring 66, which has its opposite end engaged with the tiange 54. The sprin 66 assisted by the pressure ofthe charge water normallyv keeps the valves 57 58 seated, while the pump is making the greater portion of its down stroke, and while the pump is being thus moved, the finger 62 passes into the slot 61 of the valve stem but has no effect upon the same. Provision is made for efengage the screw-threads of a nut 73 inserted into a transverse opening 74 in a projection or boss 75 on the head above the fin-ger 62.

The cam bar 71 is guided in the boss 75 by a screw 76 extended into a longitudinally extended slot 77 in the cam bar. The cam bar 71 is adjusted so that the ump can be moved a given distance and discharge the syrup into the tumbler or other receptacle before the charged water is permitted to flow into the nozzle, and then, on further movement of the pump downward, the cam 70 is engaged with the valve stem 59 and the latter is moved so as to remove the valve 58 from its seat and permit the charged iuid to pass through the valve 57 into the casing and balance the'valve 57, which is then free to be moved from its seat `by the end of the part 59 of the valve stem, thus affording a free exit for the charged fiuid, which passes through the flexible pipe 50 and passage 51, through the nozzle g into 29 returns the pump to its normal position and the valves, 57, 58 are closed by the pressure of the charged liquid assisted by the spring 66. Y

To provide for any leakage of liquid between the pipe 18 and the pipe 27, the latter is provided at its up'per end with one or more ports 80,which communicate with the tank or can I?, thereby reducing to a minimum the li uid resistance to the upward movement o the -pump by the spring 29 which may be made substantially light an -yet obtain a quick returnof the pump to its normal condition. By turning the nutl 73, the cam 7() may be adjusted so as to open the valve sooner or later in the down stroke of the piston. l

I have herein shown one construction of apparatus embodying this invention, but I do not desire to limit my invention to the particular construction shown.

Claims.

y 1. In an apparatus of the, character described, in combination, a tank or vessel containing liquid under atmospheric pressure, a pump extended into said tank or vessel and provided with'a movable head having a discharge nozzle, said pump bein capable of discharging a given quantity o liquid through said nozzle on the downward movement of the head for a portion of its movement, an outlet pipe connected with a source of supply for fluid under pressure, a valve casing with which said pipe is connected, a

pipe connecting said valve casing with said nozzle, a valve normally cutting off the su ply of Huid under pressure from said nozz e, and provided with Ia valve stem, and a cam movable with said head and acting on said valve stem on the downward movement of said head to open the said valve and permit the Huid under pressure to flow to the said nozzle and be discharged therefrom, substantially as described.

2. In an apparatus of the character described, incombination, a tank or vessel containing liquid under atmospheric pressure,

a pum extended into said tank or vessel and provi ed with a movable head having a discharge nozzle, said pump being 4ca able of discharging a given quantity o liquid through said nozzle on the downward movement of the head for a portion of its movement, an outlet pi e connected withasource of supply for iui under pressure, a valve casing with which said ipe is connected, a pipe connecting said va ve casing with said nozzle,a valve normally cutting off the su ply of iuid under pressure from said nozz e,

Aand provided with a valve stem, a cam movable with said head and acting on said valve stem on the downward movement of said head to open the said valve and permit the fluid under pressure to flow to the said nozzle and be discharged therefrom, and means to adjust said cam to engage said valve stem at di'erent portions of the downward movement of the said head, substantially as described.

3. In an apparatus of the character described, in combination, a tank or vessel containing a liquid under one pressure, a pump having a movable head provided with a nozzle, said ump being capable of discharging a pre etermined quantity of liquid from said tank on each movement of the said head in one direction, an outlet (pipe from a source of supply of fiuid un er a greater pressure, a valve casing with which sald outlet pipe is connected, means for connecting said valve casing with said nozzle, a valve in said casing controlling the passage of the iiuid of greater pressure to said nozzle, and a cam movable with said head and coperating with said valve to open the same after the said head has been moved a given distance in one direction, substantially as described.

In testimony whereof, I have signed my name to this specification in the presence of two subscribing witnesses.

WILLIAM HELMER.

Witnesses:

Jas. H. CHURoHiLL, J. MURPHY. 

